Car-truck.



S. M. CURWEN.

CAR TRUCK. APPLICATION FILE-D JAN.28. 19H.

1,138,357. Patented May 4, 1915.

7 SHEETSSHEET I.

v 3. W "'p p S. M. CURWEN.

CAR TRUCK.

APPLlCATION FILED JAN.28. 1911.

1,138,357. latvnrcd May 4, 1915.

7 5HEETSSHEET 2.

S. M. CURWEN.

CAR TRUCK.

APPLICATION FILED JAN. 28. 1911.

Patented May 4, 1915.

ISHEETS-SHEET 3.

0 O f In 111 21121? UT/VYM J J S. M. CURWEN.

, CAR TRUCK.

APPLICATION FILED JAN. 28, I911.

1,138,357. latvnted May 4, 1915.

?SHEETSSHEET 4.

1 I I 2 .l J9

S. M. CURWEN'.

CAR TRUCK.

I APPLICATION FILED JAN.28. 191]. 1,138,357. v Patented May 4,1915.

ISHEET SHEET 5.

S. M. CURWEN.

CAR TRUCK.

APPLICATION FILED JAN.28.19II.

Patented May 4, 191-3.

SHEET 6.

7 SHEETS- 1 itncaoco:

S. M. CURWEN.

CAR TRUCK.

APPLICATION men mnjzs. 1911.

1,138,357. Patented May 4, 1915.

7SHEETSSHEET 7- UNITED STATES PATENT OFFICE.

SAMUEL M; CURWEN, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO THE J. G. I BRILL COMPANY, OF PHILADELPHIA, PENNSYLVANIA, A CORPORATION" OF PENN SYLVANIA.

CAR-TRUCK.

Specification of iettcrs Patent.

Patented May 4, 1915.

Applicationjled January 28, 1911. Serial Ro.'605,156.

To all whom it may concern Be it known that I, SAMUEL M. ,CURWEN, a citizen of the United States, and a resident of the city and county of Philadelphia, State of Pennsylvania, have invented-a certain new and useful Improvement in Car- Trucks, of which the following is a specification.

Heretofore it has been the general practice when pivotal trucks are employed to pivot them in a vertical plane midway between the wheels.

In the embodiments of my invention hereinafter shown and described, each axle is pivoted from a point or center which is located over, or approximately over the axle, and also over, or approximately over, an

axle-box, two axles being employed, with.

pivotal points at diagonally opposite corners and these axles are connectedby a suitable rod or other connections so that these axles will swin together and act in harmony.

The object of my invention is to provide a suitable truck of this type with two axles which object is accomplished by the various structures hereinafter set forth, as will more fully and at large ap ear.

For a more particu ar description of my invention, reference is to be had to the accompanying drawings, forming part hereof,

I Fig. 3 is a plan view of the same. Fig. 4

is a sectional view on the line 4-4 of Fig.

3, looking in the direction of the arrows.

pedestal 9 connected by a suitable chord 10 Fig. 5 is allafl view of a modification in which :1 d1 erent form 'of combined motor support and axle-shiftmg device is shown.

Fig. '6 is a plan view, partially in section, of

still another modification in which anaxle is shown pivoted in a line a little to one side of its axis instead ot' immediately over the same. Fig. 7 is a plan view showing a modified motor support. 8 is a similarvicw of yet another modification. Figssf) and 10 are sectional views showing details of the structure shown in Fig. 7. Figs. 11 and 12 are end views of the motor and brake support shown in Fig. 8. Figs. 13 and .14 show a modified form of axle box, pedestal and spring system as well as a portion of the .as above set forth.

car-body supported thereby, Fig.14 being a sectional view on the line ll-l4 of Fig. 13, looking in the direction of the arrows. Figs. 15 and 16 show a" further modification of the axle-boxes and theirconnectiug parts, Fig. 16-showing the ,structure adapted to be used where the aXle-boxis pivoted and Fig. 15 showing the structure for the other axlebox of the same axle. Figs. 15 and 16 show structiires that are ada ted to be used in pairs one at each end 0 an axle. Figs. 17 and 18 show additional modifications in the manner in which a pivotal axle-box is mounted. Fig. 19" is a sectional view taken on the line 1919, Fig. 18, looking in the direction of the arrows.

Throughout the various views of the drawings, similar reference characters designate similar parts.

Referring to the diagrammatic view shown in Fig. 1. Here the axles 1 are provided with the usual wheels 2 and each axle is pivoted at one end at or near an axle-box journal within the circles 3 and 4. These circles designate ivotal points. It will be noted that these circles are at opposite sides. A diagonally disposed bar 5 is pivotally connected to a collar or other suitable means which is on each axle 1 and at the end opposite from the circle. The result of this is that the axle radiates when passing around a curve substantially as shown in dotted lines. All the modifications herein disclosed relate to running gear of. the character shown in Fig; 1.

Referring tovFigs. 2, 3 and 4. In this structure the axles 1 and wheels .2 are used Each sideframe 7 is provided with a small pedestal S and a large and each pedestal has an extension 11 adapt ed to carry an inverted-leaf-spring 12 which in turn supports a top chord 13 in the conventional manner. The top chord 13 has downwardly depending spring caps and guides 14,01 the conventional kind,.which fit therein and above this 'axle box 16 is the usual'axlc-box spring 17 wh ch enters into '16 .which is given a similar shape so as to and supports the pedestal S in the usual n'ianner. A pivot 18 depends from the, axlebox 16 and engages a tie-bar 19 which is perforatetl to receive this projection 18 and also secures the lower ends of the sides of the pedestal 8 in the customary manner. The other pedestal 9 has its vertical members much farther apart and the axle-box 20, which is located therein, never comes in contact with the pedestal. This axlc-box has laterally extending ears 21, which support coiled springs 22 on which are caps 23 and from which depend posts 24 which pass through perforations in the pedestal yoke Q and these posts 2 1 have suitable connections, as a T end, with bearings 26 in said yoke. The details are not material pro- 'videdth.ev are sutlicient to enable the axle in the axle-box to radiate sufficiently and properly for the. operation of the truck. In the foregoing l have described one side frame 7. The two side frames are identical and arranged in parallel and fixed relation, in the conventional manner. so that the large pedestal 9 of one is near the same axle as the small pedestal R of the other. In Fig.

. 3 only one motor casing 37 and its supporting parts are shown. It is understood that the other motor casing, which is not shown,

is identical with the one shown. It is omitted so as to avoid confusion on the drawings. The. motor casing 27 is sleeved on the axle l in the conventional manner and provided with a cross-bar 28 which is fixed thereto by bolts '29. or'other suitable means. This bar 28 carries the brake-rigging. In addition to the brake-rigging this bar '28 carries a 'irojeetion 30 on which is a head 31 which engages suitable guides 32 which run diagonallv of the axis of the truck and are secured to a suitable crossing 33 by'bolts 234, or other suitable means. This form of motor support does not interfere with the radiation of the'truck when passing round curves. These guidesjl'l are not straight but bent so as to conform to a spherical or 20 is a pivot 35 to which is secureda link 36 that is connected to a lever 37 fulcrumed at 538 ona crossing 33 and this lever 37 is also connected to a lever 39 which is also connected to another lever 37 with another fulcrum 38 on another crossing 33, and this lever 3'7 is also connected to a second link 36 which runs to another pivot 35 on the other axle box 20. This system of links and levers forces one axle-box '20 to swingin unison with the other so that both will be shifted either to the front or rear at the same time. and both will be shifted in the same direction ex ept that one will swing from one, axle box It; and the other from the other axle-box I on the other side of the truck, but the movement will, in any r tlavental be as indicated in dotted lines in In Fig. 5 the structure is the same as in Figs. 2 and 3 except that the motor support is different. Here the bar 28 cames a bracket '40 in which is mounted a pivot 11- adapted to move in said bracket 40 on a horizontal axis and provided with laterally extending lugs 42 in a vertical plane, on which is a bell-crank lever 43 with enlarged openings 44. The fulcrums of the bell crank lever 43 are at 45 in the'bracket 46 fixed to the crossing 33 by means of bolts 47 or other suit-able means. There are two of these bellcrank levers 43. and each is identical with the other and mounted in the same way, and they are connected by a suitable link 48 so that one will always swing with the other and thereby cause the axles to be correspond ingly shifted. This construction obviates the necessity of using any levers or tie rods to cause the axles to swing in unison and therefore such connections are superfluous and not shown in this figure.

In Fi 6 is shown a further modification of my invention. In this structure the axle box 49 differs from the axle box .20 in that it has anear .70 which is pivote-d to a rod 51 which is fixed to a chord 10 of the side frame 7 by means of suitable brackets 52 and. 53,

respectively. The axle box 49 isconnected to the side frame 7 in the mannershown in Figs. 2 and 3 where the axle-box 2.0 is con. nected in a similar manner. In this core struction each pedestal is similar to the pedestal 9 and no pedestal is made like the pedestal 8.

In Figs. 7, 9 and 10 is shown still a further modification. In this embodiment of my invention a bar 54 takes the place of the bar '28 and this bar has one end passing between rollers 53 and Mimountcdinabracket 57 and its othereud mounted between rollers 8 mounted in a bracket 59 on the other side frame, the bar 34 being correspondingly bent as shown in Fig. 7. In the structure shown in Fig. 3 the levers will be i'equired for shifting the axles so that one will radiate to correspond with the other.

In Figs. 8, 11 and 12 is shown a bar 60,

which is adapted to be secured to a motor casing and support the motor the same as the bars 28 and 54. and this bar has a bent portion as shown at 61 in Fig. 8 to which is secured a bracket 62 which includes a set oftlilee rollers 63 that are supported by a "crossing Gt secured to the sills 65 of a carbody, so that the motor casing and brake mechanism are supported by the car-body.

In Figs. 13 and 14 is shown a further embodiment of my invention which relates to the end of an axle and the parts connected therewith. which are remote from the pivoted end I11 this structure the axle-box 66 run. in a pedestal 67 which has upper cars es, lower ears 69 and perforations on a common axis passing through the ears on each side. The coiled spring 70 rests on one of said ears and a cap 71 rests on this spring and a suitable rod 72 passes through said ears, cap and spring. This is'enlarged at its upper end and passes through a bushing 73 so that its enlarged part rests on the cap 71, and when this rod is lowered the spring" 70 is compressed. The upper end of this rod 72 is bifurcated and provided with a pin 7'1. on which is mounted aroller 75 which rolls against suitable sub-plates 76 fixed to the side sills 77 of a car-body. Each rubplate 7 6 consists of an inverted U section or channel bent slightly, as shown in Fig. 13, so that when the axle is true the rollers 75 will be at their highest points, andlthatif the axle swings when going about a curve, this roller 7 5 runs on one of the inclines of the rub-plates and either raises the carbody or compresses the spring 70 or both; the spring 70 being compressed through the rod 72 and the cap 71. An axle-box spring 78 of the usual type separates the top of the axle box from the pedestal, and is arranged and disposed in the usual manner. The rubilates, 7 6 are fixed in place by suitable bolts 19 or other suitable means.

In Figs. 15 and 16 are shown a pair of axle-boxes and adjacent parts, suitable for a trucl; of the general character shown diagrammatically in Fig. 1. An arrangement suitable for the end 'of the axle remote from ears 81 on which rest coiled springs 82 with caps 83, and in these caps are spring-posts 84 and supported therefrom-by a ball and socket joint. The lower ends of the posts 84 are bifurcated and extend laterallyand are provided with suitable projections 85 which carry the trunnion block 86 from which extend lugs 87 which rest in suitable sockets 88. These sockets 8 are on the lower side of the frame 7 and the nosts 84 pass through suitable perforations so as to reach them. Another perforation 89, midway between the posts 84, receives the projection 90 from the lower surface of the axle-box and holds the same true. The brasses 91 which rest on top of the axle 1 are of the conventional form and require no description. The side frame 7 also has upwardly extending projections 92 which serve as guides for the spring caps 93 so that the top chord 94 will have a vertical movement only with regard to the side frame 7. The ends of side frames may be extended to receive cross-bars or not as desired, according to whether motors and brake-rigging are to be supported thereon or by the car-body. The axle 1 carries an axle-box 95 which has laterally extending spring seats 96 on which rest coil springs 97 which are surmounted by caps 98 secured to suitable rods 99 bifurcated at their upper ends and carrying rollers 100 on suitable rods 101. These rollers 100 engage rub-plates 102 which are fixed mv invention shown in these Figs. 15 and.

16 the axles 1- may be connected as shown and described above or otherwise if desired.

In both of these figures it is unnecessary to describe the functionand operation of the coiled springs 15 which is the same as in Fig. 2, nor is it necessary to describe the function of the caps 1 1 which rub against the pedestal 103.

In Figs. 17 and 18' are shown modified ways of supporting a pivoted end of the axle where the structure shown in Figs. 13

or l i, or 15 isusedflfor the swinging end or' otherwise, if desired.

It will be noticed that in these Figs. 13, 14,15, 16, 17 and 18 there is no occasion for any truck frame of conventional form, the axle being connected to the car-body throughv the pedestal and spring system.

In the structure shown in Fig. 17 the axle 1 carries an axle box 105 on the top of which is an axle box spring 106 which is surmounted by acap 107 on which is a race in which balls 108 run which also run in a similar race on cup 109 in the pedestal. 110 so that the pedestal may turn freely, to av limited extent, with regard to the axle-box 1'05 and the spring 106. The. lower ends of the jaws of the pedestal 110 are united by a tie bar .111 in the conventional manner which has a central perforation through which extends a journal 112 which depends from the lower surface of theaxle-box 105 and has the same vertical axis as the race in the ball-bearing responding recess in the cup 109 which avoids all danger of displacement. Thepedestal 110 has laterally extending ears 114 which are s itably braced and provided with cups which receive coiled springs 115 which are surmounted by guide caps 116 which rub against the projections 114 so as to keep proper alinement of the pedestal with the car-body. .The lugs 114, springs 115, caps 116 and sills 117 all have a suitable pin or bolt. 118 extending throughout and secured as shown. so as to hold said parts together. llate springs may be substituted for the coiled springs. if desired.

In the structures shown in Figs. 18 and 19 the sills 117 are provided with downwardly extending brackets 11.) at the bottom of which'arc'suitable lugs 120 and flanges 191 bar 128 and at the opposite ends thereof which bar is held by pins 129 between the bifurcated parts of the lower end of the post 125. This post 12:") and its connecting parts is substantially the same as the posts 24 and 84 which have already been described, and they are mounted in the same way. that is, they are hung from spring caps 130 on coiled springs 131 that rest on laterally extending projections 132 that run from the axle box 133. The projections 119 are also,

connected by a suitable cross-bar 134 which is so arranged as to be free and clear of the springs 131 and their caps and yet have a laterally extending part 135 which is centrally perforated so as to guide an upwardly extending lug 136 which protrudes from the axle-box 133. If desired, similar lugs or flaps 137 may be formed on'the box to embrace the springs 122 so as to prevent trans-. verse movement or a lug similar to 136 may be journaled in a suitable socket placed between its springs. This design may be used for the end of axle remote from pivotal point by omitting bar 13 i, projection 136 and lugs 137.

In View of the foregoing the operation of 'my invention will be readily understood. On a straight track the axles will be in a parallel relation in the manner which is now the universal practice. When passing around a curve, instead of remaining parallel, these axles will radiate one about a pivot at-one side of the car at or nearthe vertical axis of an axle-box. and the other at a corresponding pivot on the diagonally opposite corner of the car. Connecting mechanism causes these axles to radiate in unison so that either will take a curve properly.

While I have shown and described many parts of my invention it is obvious that it is not restricted thereto but is broad enough to cover all structures which come within the scope of the annexed claims.

lVhat I claim is: I

'1. In a truck of the class described. a truck frame, wheels. two normally parallel axles for said wheels. axle boxes and m ans for pivoting two of said axle boxes so that an axle may radiate from each. links for mount-- ing the other axle boxes so that they may move relatively to the truck and in horiwhereby the said motor casing is supported.)

3. In a truck of the class described a truck frame, wheels, axles, .axle boxes and means for pivoting two of said axle boxes so that an axle may radiate from each, and means for mounting the other'axle boxes so that they may move relatively to the truck and in a horizontal plane.

4. In a truck of the class described a side frame having small pedestals 8 and large pedestals 9 so that the pedestal 8 is adapted to receive and pivot an axle box and the pedestal 9 will stay clear of an axle box at all times.

5. In atruck of the class described, side frames and crossings connected to the same. axles with axle boxes mounted thereon one of said axle boxes being adapted to be pivoted in said frame and means for flexibly connecting the other axle box to said frame whereby it may have movement relative thereto and out of contact with said frame.

6. In a truck of the class described an axle-box, a pedestal pivotally connected to said axle box, a tie bar uniting the lower ends of the jaws of the said pedestal, an axle box spring supporting said pedestal with a projection extending downwardly from said axle box and through said bar whereby the said axle box will turn true in said pedestal and about a vertical axis.

7. In a truck of the class describci'l', side frames and crossings. axles with axle boxes thereon. said axles and axle boxes being so arranged that the axles are adapted to radiate in said frame, a motor casing sleeved on one of said axles, a crossing, a diagonally disposedslide-way mounted on said crossing, a projection with an enlarged head fixed to said motor casing. said head being arranged and disposed in said diagonally disposed slide whereby said motor casing issupported and free to radiate with the axle.

8. In a truck of the class described. side frames, an axle, a fixed pivotal bearing for the axle inone of the side frames, an axle box on the other end of the axle. a laterally extending lug onv the axle box. a bar pivotally secured to the axle box. and means for pivotally and operatively securing the bar to the side frame.

9. In a truck of the class described. a

frame. an axlemounted so as to radiate in said frame, a set of rollers supported by said side frames and another set of rollers the radiation of the axle to which it is connected by the motor casing. 1

10. In a truck oi the class described, axles, boxes supported by said axles, a pedestal, laterally extending and perforated lugs protruding from said axle boxes be tween, said lugs, springs on the axle boxes,

caps on said springs, posts extending through said lugs, caps and springs and guided by said lugs and adapted to compress said springs when lowered, rollers at the upper end of said posts, car sills and rubplates on said sills adapted to be engaged by said rollers.

11. In a truck "of the class described, an

axle, axle. boxes supported by said axle, laterally extending ears protruding from said axle box and coiled springs mounted on said ears, caps on said springs, spring posts passing through said caps, springs and ea rollers mounted at the upper ends of Sti l? posts, rub-plates adapted to be engaged by said rollers and a side frame to which said rub plates are secured.

12. In a truck of the class described, an

wardly extending, centrally located lug on 'said axle box, laterally extending ears on said axle box, springs on said ears, caps on said springs, spring posts suspended from said caps, a side frame having parts engaging mechanism which also engages said posts whereby said posts support said side frame.

13. In a truck of the class described, a frame, parallel axles, wheels mounted on said axles, axle boxes at each end of each of said axles, means for pivoting one axle box of each axle on o posite sides of the truck, and swinging lin s connecting each of the other axle boxes with the frame of the truck.

14. in a truck of the class described, a frame, parallel axles, wheels mounted on saidaxles, axle boxes at each end of each of said axles, means for pivoting one axle box of each axle on opposite sides of the truck, swin 'ng links connecting each ofthe other axle oxes with the frame, and mechanism.

connecting said axles whereby they will swing in unison. n

' SAMUEL CURWEN.

WitnIassemA UIs LING Amazon I. V. 

